Starting a website to post projects of small value and promote locally in your community

I want to develop a website where people can post their Jobs and tradesmen could get back with quotes. The categories will be anything to everything. Pitch will be to trade locally to support local communities. Tradesmen will be able to find and bid for jobs and will have assurance to get paid through website. Traders and clients will both be rated and feedback will be left about the trade.

In Summary; Creating an onlne platform for traders and locals to meet, get instant qoutes from multiple traders and select appropriate tradesmen for small / ongoing jobs after interviewing them.